| *** Taxonomy Characterization Data *** |
| Pedon ID: 74CA041009 | ( Marin, California ) | Print Date: Dec 11 2024 4:04PM |
| Sampled as on May 30, 1974: | Unnamed |
| Revised to correlated: | DIPSEA ; Loamy-skeletal, mixed Mollic Hapludalfs |
| United States Department of Agriculture | ||||
| SSL | - | Project | NL74CA002 MARIN CO | Natural Resources Conservation Service |
| - | Site ID | S1974CA041009 Lat: 38° 56' 26.00" north Long: 122° 39' 2.01" west MLRA: 15 | National Soil Survey Center | |
| - | Pedon No. | 74C0020 | Soil Survey Laboratory | |
| - | General Methods 1B1A, 2A1, 2B | Lincoln, Nebraska 68508-3866 | ||
| Taxonomy Tier 1 | -1- | -2- | -3- | -4- | -5- | -6- | -7- | -8- | -9- | -10- | |||
| Fine | CaCO3 | 1500 | .1-75 | Bulk | Cole | Vol | Resist | ||||||
| Clay | Clay | Clay | kPa | Clay | mm | Den | Whole | % of | Min | ||||
| Depth | <.002 | <.0002 | <.002 | /Clay | Est | Frac | 33 kPa | Soil | Whole | % | |||
| Layer | (cm) | Horz | Prep | (---------% of <2 mm-------) | (-------- % --------) | g cm-3 | cm cm-1 | ||||||
| 3A1a1a | 8D1 | 4A1d | |||||||||||
| 74C00134 | 0-8 | A | S | 17.6 | 0.94 | 82 | 0.89 | 0.024 | 47 | ||||
| 74C00135 | 8-20 | B1 | S | 20.8 | 0.62 | 61 | 26 | ||||||
| 74C00136 | 20-38 | B2 | S | 20.7 | 0.58 | 52 | 22 | ||||||
| 74C00137 | 38-56 | Bt1 | S | 19.0 | 0.55 | 57 | 1.33 | 0.009 | 29 | ||||
| 74C00138 | 56-74 | Bt2 | S | 19.6 | 0.55 | 72 | 48 | ||||||
| 74C00139 | 74-99 | C1 | S | 17.7 | 0.52 | 92 | 81 | ||||||
| 74C00140 | 99-140 | C2 | S | 18.6 | 0.51 | 84 | 66 | ||||||
| Taxonomy Tier 2 | -1- | -2- | -3- | -4- | -5- | -6- | -7- | -8- | -9- | -10- | -11- | -12- | -13- | -14- | -15- | -16- | |||
| pH | pH | Org | Tot | Al+½ Fe | CO3 as | (--- Base Sat ---) | NZ | ECEC | CEC7 | ECEC | Al | ||||||||
| Depth | H2O | NaF | C | C | Oxal | ODOE | CaCO3 | NH4 | Bases | P Ret | cmol(+) | /Clay | /Clay | Sat | E C | ESP | |||
| Layer | (cm) | Horz | Prep | (------------------------------------------ % --------------------------------------------) | kg -1 | % | dS m-1 | % | |||||||||||
| 4C1a2a | 6A1c | 5C1 | 5C3 | 8D1 | 5D2 | ||||||||||||||
| 74C00134 | 0-8 | A | S | 5.9 | 6.74 | 76 | 60 | 2.02 | 1 | ||||||||||
| 74C00135 | 8-20 | B1 | S | 6.4 | 3.21 | 75 | 61 | 1.27 | 1 | ||||||||||
| 74C00136 | 20-38 | B2 | S | 5.8 | 1.75 | 56 | 49 | 1.05 | 1 | ||||||||||
| 74C00137 | 38-56 | Bt1 | S | 5.7 | 0.93 | 52 | 42 | 0.85 | 2 | ||||||||||
| 74C00138 | 56-74 | Bt2 | S | 5.6 | 0.45 | 51 | 41 | 0.73 | 1 | ||||||||||
| 74C00139 | 74-99 | C1 | S | 5.6 | 0.30 | 58 | 56 | 0.75 | 2 | ||||||||||
| 74C00140 | 99-140 | C2 | S | 5.7 | 0.21 | 61 | 53 | 0.66 | 2 | ||||||||||
| Pedon Calculations | |||
| Calculation Name | Result | Units of Measure | |
| CEC Activity, CEC7/Clay, Weighted Average | 0.89 | (NA) | |
| Clay, carbonate free, Weighted Average | 20 | % wt | |
| Weighted Particles, 0.1-75mm, 75 mm Base | 59 | % wt | |
| Volume, >2mm, Weighted Average | 32 | % vol | |
| Clay, total, Weighted Average | 20 | % wt | |
| Weighted averages based on control section: 20-70 cm | |||